How to read the graph: The indicator demonstrates the impact of climate change on widespread bird populations has increased strongly in the past twenty years. The Climatic Impact Indicator (CII) measures the divergence between the population trends of bird species projected to expand their range and those predicted to shrink their range due to climate change.

Silent except for the humming of bees and the distant hammering of woodpeckers, Białowieża Forest is a fairytale landscape of tall trees, peat bogs and meadows – home to innumerable species of birds, invertebrates, lichens, fungi and other flora and fauna including grey wolves, lynx, elk and a large herd of rare European bison.